CN105577330B - A kind of data retransmission system and method and mobile terminal - Google Patents
A kind of data retransmission system and method and mobile terminal Download PDFInfo
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- CN105577330B CN105577330B CN201410524726.5A CN201410524726A CN105577330B CN 105577330 B CN105577330 B CN 105577330B CN 201410524726 A CN201410524726 A CN 201410524726A CN 105577330 B CN105577330 B CN 105577330B
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Abstract
The invention discloses a kind of data retransmission system and method and mobile terminals, belong to technical field of data transmission；System includes user terminal and network-side, and user terminal is connected by communication network and connect with network-side, and is carried out data transmission with AM transmission mode；User terminal includes: retransmission unit；First judging unit；First reset cell；Method includes: that user terminal judges whether to need to retransmit PDU data packet, and carries out the re-transmission of PDU data packet；Can the PDU data packet that the response message judgement that user terminal is returned according to network-side retransmits be identified by network-side；User terminal directly executes transmission resetting according to judging result, and network-side is requested to execute corresponding transmission resetting, to restart to transmit PDU data packet.The beneficial effect of above-mentioned technical proposal is: reducing the number of invalid data transmission, the efficiency of improve data transfer；Interface-free resources are avoided to waste；Technical solution is implemented simply, and implementation cost is lower.
Description
Technical field
The present invention relates to technical field of data transmission more particularly to a kind of data retransmission system and method and movements eventually
End.
Background technique
In the prior art, transmit in user side and network side protocol Data Unit (Protocol data unit,
PDU in), head expansion type field (Header Extension Type, HE) usually is had, that is, is located on PDU data packet header
Field.
Typically, HE field is the field with 2bit, can indicate four kinds of data types: 00,01,10 and
11.Every kind of data type may be incorporated for a kind of specific state of the PDU data packet after indicating.Such as 00 indicate after connect
Connect be PDU data or 10 indicate it is latter linked be include a complete PDU data packet in packet header etc..
But user side (such as mobile terminal) is in moving process, or since other reasons (such as carry out cell weight
Choosing etc.) between different network sides (such as base station) be attached switching, then different network sides is not there may be support or
The case where supporting the PDU data packet of HE=10, and then carry out user terminal with postponing, the network side may be because of can not identify
User side send the PDU data packet with HE=10 and as invalid PDU data packet abandon, therefore influence user side
Data transmission between network side.
Summary of the invention
According to problems of the prior art, a kind of data retransmission system and method and mobile terminal, purport are now provided
The transmission of PDU data packet between user side and network side is influenced caused by solving the problems, such as to change because of operating mode.
Above-mentioned technical proposal specifically includes:
A kind of data retransmission system, including network-side and user terminal, the user terminal pass through communication network and the network
End carries out data transmission；Wherein, under a preset field support mode, the RLC of the user terminal is real for the user terminal work
Carried out data transmission between body and the RLC entity of the network-side with AM transmission mode；
The user terminal includes:
Retransmission unit, for retransmitting PDU data packet to the network-side；
First judging unit, the response message for being returned according to the corresponding PDU data packet retransmitted of the network-side
Whether judgement this time retransmits and is identified, and exports corresponding first judging result；
First reset cell connects first judging unit, is used for according to first judging result, in the network
Transmission resetting executed to the RLC entity of the user terminal when end can not identify the PDU data packet of re-transmission, and to the network
End sends corresponding transmission resetting request.
Preferably, data retransmission system, wherein the network-side includes:
Receiving unit, for receiving the PDU data packet that the user terminal retransmits and the institute that the user terminal is sent
State transmission resetting request；
Second judgment unit connects the receiving unit, for judging that can the network-side identify the user terminal weight
The PDU data packet passed, and export corresponding second judging result；
Transmission unit connects the second judgment unit, for currently whether being in the field according to the network-side
Corresponding network configuration information is sent to the user terminal under support mode, and according to second judging result to the use
Family end sends the corresponding response message；
Second reset cell connects the receiving unit, and the transmission resetting for sending according to the user end is asked
It asks and the corresponding transmission resetting is executed to the RLC entity of the network-side.
Preferably, data retransmission system, wherein the user terminal further include:
Mode setting unit, the network configuration information for being sent according to the network-side configure the user terminal
Operating mode supports mode to keep or close the field of the user terminal.
Preferably, data retransmission system, wherein include: in the second judgment unit
Mode deciding module supports mode, and output phase for judging whether the network-side is currently in the field
The mode decision result answered；
Field judgment module, including a preset value, the field judgment module connects the mode deciding module, uses
According to the mode decision as a result, when the network-side is not under the field support mode judgement retransmit described in
Whether the value for the HE field for including in PDU data packet is equal to the preset value, and exports corresponding second judging result；
The transmission unit is according to second judging result, when the value of the HE field is equal to the preset value to institute
It states user terminal and returns to the invalid response message of re-transmission；Or
It is returned when the value of the HE field is not equal to the preset value to the user terminal and retransmits the effective response
Message.
Preferably, data retransmission system, wherein the field supports that mode is that can identify with value equal to described pre-
If the operating mode of the PDU data packet of the HE field of value.
Preferably, data retransmission system, wherein the preset value is 10.
Preferably, data retransmission system, wherein first reset cell is by abandoning described in all retransmitting
PDU data packet, and the mode for restarting to transmit the PDU data packet executes the transmission to the RLC entity of the user terminal
Resetting.
A kind of data repeating method, including network-side and user terminal, the user terminal pass through communication network and the network
End carries out data transmission；Wherein, the user terminal works under a preset field support mode, and the RLC of the user terminal is real
Carried out data transmission between body and the RLC entity of the network-side with AM transmission mode；
The data repeating method specifically includes:
Step S1a, the user terminal judge whether there is the PDU data packet for needing to retransmit；
The PDU data packet for needing to retransmit if it does not exist, then exit；
Step S2a, the user terminal retransmit the PDU data packet, and receive the corresponding response that the network-side returns
Message；
Step S3a, the user terminal judge whether the response message indicates that the network-side can not identify the institute of re-transmission
State PDU data packet；
If the response message indicates that the network-side can identify the PDU data packet of re-transmission, exit；
Step S4a executes transmission resetting to the RLC entity of the user terminal, and sends corresponding transmission resetting request extremely
The network-side, with backed off after random.
Preferably, data repeating method, wherein the data repeating method of the network-side includes:
Step S1b, the network-side according to itself whether be under the field support mode to the user terminal send
The corresponding network configuration information；
Step S2b, the network-side receive the PDU data packet that the user terminal retransmits；
Step S3b, judges whether the network-side is under the field support mode；
If the network-side is under the field support mode, exit；
Step S4b, judges whether the value for the HE field for including in the PDU data packet retransmitted is equal to a preset value；
If the value of the HE field is not equal to the preset value, is returned to the user terminal and receive the effective response
Message, with backed off after random；
Step S5b, Xiang Suoshu user terminal, which returns, receives the invalid response message；
Step S6b receives the transmission resetting request that the user terminal is sent, and to the RLC entity of the network-side
The corresponding transmission resetting is executed, with backed off after random.
Preferably, data repeating method, wherein before executing the step S1a, the user terminal is first according to
The network configuration information that network-side is sent configures the operating mode of itself, supports mode to keep or close the field.
Preferably, data repeating method, wherein include: to the transmission resetting that the RLC entity executes
Step S51 abandons all PDU data packets retransmitted；
Step S52 restarts to transmit the PDU data packet.
Preferably, data repeating method, wherein the field supports that mode is that can identify with value equal to described pre-
If the operating mode of the PDU data packet of the HE field of value.
Preferably, data repeating method, wherein in the step S4b, the preset value is 10.
A kind of mobile terminal, wherein apply above-mentioned data retransmission system.
A kind of mobile terminal, wherein use above-mentioned data repeating method.
The beneficial effect of above-mentioned technical proposal is:
1) number of invalid data transmission, the efficiency of improve data transfer are reduced；
2) interface-free resources are avoided to waste；
3) technical solution is implemented simple, and implementation cost is lower.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of data retransmission system in preferred embodiment of the invention；
Fig. 2-4 is a kind of flow diagram of data repeating method in preferred embodiment of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
In the prior art, it since the communication environment of mobile terminal changes, may cut between different base stations
Change connection.Therefore, when mobile terminal is connected to a new base station, the base station can according to its own support operating mode to
The new network configuration information that mobile terminal is sent, the operating mode that mobile terminal configuration is consistent at the base station connected.
The present invention is in the case that foundation is described above.In preferred embodiment of the invention, a kind of data are provided
Retransmission system, it is specific as shown in Figure 1, comprising:
User terminal 1 and network-side 2.In preferred embodiment of the invention, due to user terminal 1 the same time only with one
Network-side 2 connects, therefore only shows in Fig. 1 the structure that user terminal 1 is connect with one of network-side 3.Of the invention is preferable
Embodiment in, connected between user terminal 1 and network-side 2 by communication network 3.
In preferred embodiment of the invention, above-mentioned user terminal 1 may include and the above-mentioned network-side 2 in mobile terminal
It may include in base station.Therefore switch to connect between at least two base stations using mobile terminal and can be used as of the invention its
In a specific embodiment, therefore, in a preferred embodiment of the invention, above-mentioned data retransmission system includes user terminal
With at least two network-sides.
In preferred embodiment of the invention, between the RLC entity of above-mentioned user terminal 1 and the RLC entity of network-side 2 with
AM transmission mode (Acknowledged Mode, affirmation mode) carries out data transmission.Mark is added i.e. in the data transmitted
Know, and needs the confirmation of the RLC entity of equity that could complete the process that data are transmitted.
In preferred embodiment of the invention, the PDU data packet transmitted under AM transmission mode is bound to corresponding
HE field.
In preferred embodiment of the invention, include: in above-mentioned user terminal 1
Mode setting unit 11, the operating mode of the network configuration information configuration user terminal for being sent according to network-side,
Mode is supported to keep or close the field of user terminal；
In preferred embodiment of the invention, the above-mentioned default of user terminal 1 works under a preset field support mode.
So-called field supports mode, i.e. user terminal 1 is supported with the PDU data packet including specific HE field.
In preferred embodiment of the invention, above-mentioned specific HE field means the value etc. of the HE field in PDU data packet
In a preset value.
In preferred embodiment of the invention, HE field is the head information field of PDU data packet, which is usually
2bit can indicate four kinds of states, commonly used in the PDU data content after expression.For example, HE=00, then it represents that Zhi Houlian
Connecing is PDU data, if HE=10, then it represents that it is latter linked be entire PDU data packet.
In preferred embodiment of the invention, above-mentioned preset value is 10, i.e., above-mentioned specific HE field means HE field
Value HE=10.
In preferred embodiment of the invention, in above-mentioned user terminal 1 further include:
Retransmission unit 12, for retransmitting PDU data packet to network-side；
In preferred embodiment of the invention, result in the need for retransmitting PDU data when corresponding event occurs in communication network
Bao Shi, user terminal 1 retransmit PDU data packet to network-side 2 using retransmission unit 12.
In preferred embodiment of the invention, in above-mentioned user terminal 1 further include:
First judging unit 13, the response message for being returned according to the corresponding PDU data packet retransmitted of network-side 2 judge this
Whether secondary re-transmission is identified, and exports corresponding first judging result；
In preferred embodiment of the invention, due to including HE field in PDU data packet, and only supported in above-mentioned field
The network-side 2 and/or user terminal 1 to work under mode could identify the specific HE field.Correspondingly, it is not at above-mentioned
Network-side 2 and/or user terminal 1 under field support mode can not identify above-mentioned with specific HE field (i.e. HE=10)
PDU data packet, therefore network-side 2 can select to abandon when receiving the PDU data packet with HE=10 field, and to user
End 1, which returns, receives invalid response message.
In preferred embodiment of the invention, above-mentioned field supports that mode is " Special HE " mode, is a kind of as above
The operating mode of the specific HE field of support described in text.
In preferred embodiment of the invention, in above-mentioned user terminal 1 further include:
First reset cell 14 connects the first judging unit 13, for the first judging result that basis accordingly exports, in net
Network end 2, which can not identify, executes transmission resetting to the RLC entity of user terminal 1 when the PDU data packet of re-transmission, and sends to network-side 2
Corresponding transmission resetting request.
In preferred embodiment of the invention, since network-side 2 is not under field support mode at this time, and according to network
Configuration information, user terminal 1 are equally not under field support mode, therefore either network-side 2 or user terminal 1 can not be known
The PDU data packet with HE=10 field not retransmitted.
In preferred embodiment of the invention, since user terminal 1 switches connection between different network-sides 2, then for
For the communication environment that user terminal is connect with one of network-side 2, transmission may be supported to have the PDU of specific HE field
Data packet (as described above, in preferred embodiment of the invention, the value of the specific HE field is HE=10).Then user terminal
1 is configured to identify the PDU data packet with specific HE field according to the network configuration information that network-side is sent
Above-mentioned preset field supports mode.Therefore the transmission of above-mentioned PDU data packet can be carried out between network-side 2 and user terminal 1.
And when user terminal 1 then when being connect with another network-side 2, then communication environment at this time may not supported to band
There is the PDU data packet of HE=10 field to be transmitted, i.e., is changed to user terminal 1 to close above-mentioned word by network configuration information
Section supports mode.If then passing through communication network 3 at this time has the PDU data packet with HE=10 to be retransmitted to network-side 2, network
End 2 can be abandoned using the PDU data packet as unrecognized data packet.User terminal 1 can receive the transmission of network-side 2 at this time
Invalid message is received, then user terminal 1, which will continue to retransmit this, is identified as invalid PDU data packet.Above-mentioned retransmission processes can be held
Continue a preset maximum times, then according to the regulation of communication protocol, user terminal 1 is to it after re-transmission reaches maximum times
RLC entity executes the operation (RESET operation) of transmission resetting, that is, abandons all PDU data packets transmitted, empties and sends team
Column, and restart to transmit PDU data packet.At this time since user terminal 1 and network-side 2 itself do not support the PDU number of HE=10
According to packet sending function, therefore in the PDU data packet of its transmission, the value of HE field will not be equal to 10, and network-side 2 can also receive
To correct PDU data packet.
At this point, since the equity of RLC entity in transmission process executes, the transmission weight that network-side 2 is sent according to user terminal 1
It sets request and transmission resetting equally is executed to its RLC entity.
But in above-mentioned data transmission procedure, due to once occurring retransmitting situation, it is always necessary to reach number of retransmissions most
Big value just carries out transmission resetting, therefore the transmission time of consuming is longer, while failed transmission is more, can waste and more eat dishes without rice or wine to provide
Source.Therefore the transmission mode needs of this PDU data packet are improved.
In preferred embodiment of the invention, include: in above-mentioned network-side 2
Receiving unit 21, the transmission resetting that PDU data packet and user terminal 1 for receiving the re-transmission of user terminal 1 are sent are asked
It asks；
Can second judgment unit 22 connects receiving unit 21, the PDU that identify that user terminal 1 retransmits for judging network-side
Data packet, and export corresponding second judging result；
In preferred embodiment of the invention, above-mentioned second judgment unit 22 further comprises:
Mode deciding module 221, it is current whether in field support mode for judging network-side 2, and export corresponding
Mode decision result；
In preferred embodiment of the invention, the operating mode current according to network-side 2 of mode deciding module 221, i.e. net
Whether network end 2 is current works under field support mode, exports corresponding mode decision result.
Field judgment module 222, including a preset value, 222 connection mode judgment module 221 of field judgment module,
For according to mode decision as a result, when network-side 2 is not under field support mode judgement retransmit PDU data packet in include
The value of HE field whether be equal to preset value, and export corresponding second judging result；
In preferred embodiment of the invention, field judgment module 222 is according to above-mentioned mode decision as a result, executing corresponding
Judgement:
When network-side 2 is still under field support mode, the PDU data packet with HE=10 field still can be by
It normally receives, therefore does not do any judgement at this time；
When network-side 2 is not under field support mode, the PDU data packet with HE=10 field cannot be by positive common sense
It not and receives, includes in the PDU data packet retransmitted at this time using the user terminal 1 that the judgement of field judgment module 222 is currently received
HE field whether be equal to above-mentioned preset value, that is, whether the value of HE field is equal to 10.
In preferred embodiment of the invention, the practical PDU data packet received by judgement of field judgment module 222
In include the value of HE field judge whether to identify the PDU data packet, and export corresponding field determination.
In preferred embodiment of the invention, above-mentioned field determination is the second judging result.In other words, of the invention
Preferred embodiment in, the second judging result is to judge whether network-side 2 can identify user under current operating mode
The PDU data packet that end 1 retransmits.
Whether transmission unit 23 connects second judgment unit 22, for current in field support mode according to network-side 2
It is lower to send corresponding network configuration information to user terminal 1, and corresponding response is sent to user terminal 1 according to the second judging result
Information；
In preferred embodiment of the invention, transmission unit 23 actually undertakes the transmission task of two kinds of information:
Firstly, the operating mode current according to network-side 2, transmission unit 23 send corresponding network configuration to user terminal 1
Information.
In preferred embodiment of the invention, above-mentioned network configuration information keeps or closes field for configuring user terminal 1
Support mode (in preferred embodiment of the invention, default user end currently opens field and supports mode).
In preferred embodiment of the invention, for user terminal 1, field supports mode by closing to opening, or
Field supports in the mode these types of situation that remains off or be maintained open, will not all generate PDU data packet because HE field not by
The case where supporting and being dropped.Therefore, mainly discuss that the field of user terminal 1 supports mode by being opened in technical solution of the present invention
The case where closing.
Secondly, transmission unit 23 returns to the corresponding PDU data packet retransmitted according to above-mentioned second judging result, to user terminal 1
Response message.
In preferred embodiment of the invention, if indicating that network-side 2 can not identify PDU data according to the second judging result
Packet, then transmission unit 23 returns to user terminal 1 and receives invalid response message；Correspondingly, if network-side 2 can normally identify and
PDU data packet is received, then transmission unit 23 returns to user terminal 1 and receives effective response message.
In preferred embodiment of the invention, as described above, user terminal 1 is receiving the invalid response message of reception
Afterwards, starting transmission resetting process first executes transmission resetting to the RLC entity in user terminal 1, will then transmit resetting accordingly
Request is sent to network-side 2.
Second reset cell 24 connects receiving unit 21, and the transmission resetting request for being sent according to user terminal 1 is to network
The RLC entity at end executes corresponding transmission resetting.
In preferred embodiment of the invention, due in RLC entity transmission, needing unification between reciprocity RLC entity
Configure and execute operation.Therefore, after user terminal 1 executes transmission resetting to its RLC entity, network-side 2 is according to the biography received
Defeated resetting request equally executes transmission resetting to the RLC entity of network-side 2.
In preferred embodiment of the invention, the transmission resetting that network-side 2 executes and the transmission that user terminal 1 executes reset phase
Together, details are not described herein.
In preferred embodiment of the invention, above-mentioned data retransmission system is suitable for plurality of communication systems, such as WCDMA leads to
Communication network and TD-SCDMA communication network etc..
In conclusion it is an object of the invention to: different network-sides 2 is replaced due to user terminal 1 and connects caused user
End 1 is configured to work under different operating modes according to the operating mode of network-side 2.When user terminal 1 and network-side 2
Operating mode when not supporting the PDU data packet with specific HE field (HE=10), the band that user terminal 1 is retransmitted
When having the PDU data packet of specific HE field, network-side 2 can not be identified.The then reception that user terminal 1 is returned according to network-side 2
Invalid response message directly executes transmission resetting to the RLC entity of user terminal 1, that is, empties all PDU datas transmitted
Packet, and restart to transmit PDU data packet, the then corresponding transmission resetting request of transmission to network-side 2, so that network-side 2
The RLC entity of equity equally executes transmission resetting.Above-mentioned technical proposal can be transmitted to avoid excessive invalid data, reduce data
The time delay of re-transmission, the efficiency of improve data transfer.
In preferred embodiment of the invention, a kind of data repeating method based on above-mentioned data retransmission system is also provided.
In preferred embodiment of the invention, the data repeating method of user terminal is specifically as shown in Figure 2, comprising:
Step S1a, user terminal judge whether there is the PDU data packet for needing to retransmit；
The PDU data packet for needing to retransmit if it does not exist, then exit；
In preferred embodiment of the invention, user terminal is not under field support mode at this time, therefore is needed if it does not exist
The PDU data packet to be retransmitted can't include corresponding specific HE field in the PDU data packet that then user terminal newly transmits, because
The PDU data packet that this user terminal newly transmits can allow network-side normally to identify and receive, without entering in process of the invention.Cause
This exits the process when there is no the PDU data packet for needing to retransmit.
In preferred embodiment of the invention, in executing above-mentioned steps S1a, what user terminal was sent according to network-side first
Network configuration information configures its operating mode, i.e., keeps or close user terminal according to the current operating mode selection of network-side
Field support mode.
Step S2a, user terminal retransmit PDU data packet, and receive the corresponding response message of network-side return；
Step S3a, user terminal judge whether response message indicates that network-side can not identify the PDU data packet of re-transmission；
If response message instruction network-side can identify the PDU data packet of re-transmission, exit；
In preferred embodiment of the invention, user terminal judges the PDU number retransmitted by the corresponding response message returned
It is whether effective according to wrapping.
Further, in preferred embodiment of the invention, since network-side thinks PDU data packet when judging HE=10
Can not be identified, thus user terminal judge corresponding response message for receive it is invalid when, it can know the PDU number of current re-transmission
According to the HE field for having HE=10 in packet.
Step S4a executes transmission resetting to the RLC entity of user terminal, and sends corresponding transmission resetting request to network
End, with backed off after random.
In preferred embodiment of the invention, when user terminal judges to retransmit failure (i.e. network-side received data packet is invalid)
Afterwards, user terminal executes transmission resetting to the RLC entity of itself first, sends corresponding transmission resetting request then to network-side,
To request the RLC entity of the equity in network-side to execute same transmission resetting.
In preferred embodiment of the invention, as shown in figure 3, the data repeating method in above-mentioned network-side specifically includes:
Whether step S1b, network-side send corresponding network to user terminal and match according to itself being under field support mode
Confidence breath；
Step S2b, network-side receive the PDU data packet that user terminal retransmits；
Step S3b, judges whether network-side is under field support mode；
If network-side is under field support mode, exit；
In preferred embodiment of the invention, similarly, if network-side is now under field support mode, without adopting
With re-transmission process of the invention, therefore directly exit.
Step S4b, judges whether the value for the HE field for including in the PDU data packet retransmitted is equal to a preset value；
If the value of HE field is not equal to preset value, is returned to user terminal and receive effective response message, with backed off after random；
In preferred embodiment of the invention, above-mentioned preset value is 10, that is, judges to wrap in the PDU data packet of current re-transmission
Whether the value of the HE field included is equal to 10, and exports corresponding judging result.
Step S5b is returned to user terminal and is received invalid response message；
In preferred embodiment of the invention, when network-side itself is not under field support mode, and the weight received
Include the HE field of HE=10 in the PDU data packet of biography, then network-side can not identify the PDU data packet at this time, therefore directly to
User terminal, which returns, receives invalid response message.
Correspondingly, in preferred embodiment of the invention, when network-side itself is under field support mode or network
Though end is not under field support mode itself, the value for the HE field having in the PDU data packet received is simultaneously not equal to
Above-mentioned preset value (i.e. HE ≠ 10), then network-side can identify the PDU data packet at this time, and return and received effectively to user terminal
Response message
Step S6b receives the transmission that user terminal is sent and resets request, and executes corresponding pass to the RLC entity of network-side
Defeated resetting, with backed off after random.
In preferred embodiment of the invention, as shown in Figure 2, user terminal, which receives, to be received invalid response accordingly and disappears
After breath, transmission resetting is carried out to the RLC entity in user terminal first, then sends corresponding transmission resetting request to network-side.
Then correspondingly, network-side also carries out corresponding transmission resetting to the RLC entity in network-side, to guarantee communication environment
The unified configuration of the RLC entity of middle equity.
In preferred embodiment of the invention, as shown in figure 4, above-mentioned transmission may include: the step of resetting
Step S51 abandons all PDU data packets retransmitted；
Step S52 restarts to transmit PDU data packet.
In preferred embodiment of the invention, above-mentioned field supports mode as mentioned above it is possible, identification band can be referred to
There is value to be equal to the operating mode of the PDU data packet of the HE field of preset value, in preferred embodiment of the invention, that is, can
The operating mode of enough PDU data packet of the identification with HE=10 field.
In preferred embodiment of the invention, a kind of mobile terminal is also provided, wherein above-mentioned data retransmission system is applied, tool
For body, including the user terminal in above-mentioned data retransmission system.
In preferred embodiment of the invention, a kind of mobile terminal is also provided, wherein using above-mentioned data repeating method.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (12)
1. a kind of data retransmission system, including network-side and user terminal, the user terminal passes through communication network and the network-side
Carry out data transmission；It is characterized in that, the user terminal works under a preset field support mode, the user terminal
Carried out data transmission between RLC entity and the RLC entity of the network-side with AM transmission mode；
The user terminal includes:
Retransmission unit, for retransmitting PDU data packet to the network-side；
First judging unit, the response message for being returned according to the corresponding PDU data packet retransmitted of the network-side judge
It this time retransmits and whether is identified, and export corresponding first judging result；
First reset cell connects first judging unit, for according to first judging result, the network-side without
Transmission resetting is executed to the RLC entity of the user terminal when PDU data packet that method identification retransmits, and is sent out to the network-side
Send corresponding transmission resetting request；
The network-side includes:
Receiving unit, for receiving the PDU data packet that the user terminal retransmits and the biography that the user terminal is sent
Defeated resetting request；
Second judgment unit connects the receiving unit, for judging that can the network-side identify what the user terminal retransmitted
The PDU data packet, and export corresponding second judging result；
Transmission unit connects the second judgment unit, supports for currently whether being in the field according to the network-side
Corresponding network configuration information is sent to the user terminal under mode, and according to second judging result to the user terminal
Send the corresponding response message；
Second reset cell connects the receiving unit, the transmission resetting request pair for sending according to the user end
The RLC entity of the network-side executes the corresponding transmission resetting；
Include: in the second judgment unit
Mode deciding module is supported mode for judging whether the network-side is currently in the field, and is exported corresponding
Mode decision result；
Field judgment module, including a preset value, the field judgment module connects the mode deciding module, is used for root
According to the mode decision as a result, the PDU number that judgement retransmits when the network-side is not under the field support mode
Whether it is equal to the preset value according to the value for the HE field for including in packet, and exports corresponding second judging result；
The transmission unit is according to second judging result, when the value of the HE field is equal to the preset value to the use
Family end, which returns, retransmits the invalid response message；Or
It is returned when the value of the HE field is not equal to the preset value to the user terminal and retransmits the effective response message.
2. data retransmission system as described in claim 1, which is characterized in that the user terminal further include:
Mode setting unit, the network configuration information for being sent according to the network-side configure the work of the user terminal
Mode supports mode to keep or close the field of the user terminal.
3. data retransmission system as described in claim 1, which is characterized in that the field supports that mode is that can identify to have
Value is equal to the operating mode of the PDU data packet of the HE field of the preset value.
4. data retransmission system as claimed in claim 1 or 3, which is characterized in that the preset value is 10.
5. data retransmission system as described in claim 1, which is characterized in that first reset cell by abandon it is all just
In the PDU data packet of re-transmission, and restart to transmit RLC entity of the mode to the user terminal of the PDU data packet
Execute the transmission resetting.
6. a kind of data repeating method, including network-side and user terminal, the user terminal passes through communication network and the network-side
Carry out data transmission；It is characterized in that, the user terminal works under a preset field support mode, the user terminal
Carried out data transmission between RLC entity and the RLC entity of the network-side with AM transmission mode；
The data repeating method specifically includes:
Step S1a, the user terminal judge whether there is the PDU data packet for needing to retransmit；
The PDU data packet for needing to retransmit if it does not exist, then exit；
Step S2a, the user terminal retransmit the PDU data packet, and receive the corresponding response message that the network-side returns；
Step S3a, the user terminal judge whether the response message indicates that the network-side can not identify the PDU of re-transmission
Data packet；
If the response message indicates that the network-side can identify the PDU data packet of re-transmission, exit；
Step S4a executes transmission to the RLC entity of the user terminal and resets, and sends corresponding transmission resetting and request to described
Network-side, with backed off after random；
The data repeating method of the network-side includes:
Step S1b, the network-side according to itself whether be under the field support mode sent to the user terminal it is corresponding
The network configuration information；
Step S2b, the network-side receive the PDU data packet that the user terminal retransmits；
Step S3b, judges whether the network-side is under the field support mode；
If the network-side is under the field support mode, exit；
Step S4b, judges whether the value for the HE field for including in the PDU data packet retransmitted is equal to a preset value；
If the value of the HE field is not equal to the preset value, the effective response of reception is returned to the user terminal and is disappeared
Breath, with backed off after random；
Step S5b, Xiang Suoshu user terminal, which returns, receives the invalid response message；
Step S6b receives the transmission resetting request that the user terminal is sent, and executes to the RLC entity of the network-side
The corresponding transmission resetting, with backed off after random.
7. data repeating method as claimed in claim 6, which is characterized in that before executing the step S1a, the user terminal
The operating mode of itself is configured, according to the network configuration information that the network-side is sent first to keep or close the word
Section supports mode.
8. data repeating method as claimed in claim 7, which is characterized in that the transmission weight executed to the RLC entity
It sets and includes:
Step S51 abandons all PDU data packets retransmitted；
Step S52 restarts to transmit the PDU data packet.
9. data repeating method as claimed in claim 7, which is characterized in that the field supports that mode is that can identify to have
Value is equal to the operating mode of the PDU data packet of the HE field of the preset value.
10. data repeating method as claimed in claim 8 or 9, which is characterized in that in the step S4b, the preset value is
10。
11. a kind of mobile terminal, which is characterized in that data retransmission system of the application as described in any one of claim 1-5.
12. a kind of mobile terminal, which is characterized in that using the data re-transmission side as described in any one of claim 6-10
Method.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101569148A (en) * | 2007-01-10 | 2009-10-28 | Lg电子株式会社 | Method of generating data block in wireless communication system |
| CN103503509A (en) * | 2011-04-12 | 2014-01-08 | 瑞典爱立信有限公司 | A packet data unit, a user device, and a radio network controller for transmitting data from a radio network controller to the user device |
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| US20090175175A1 (en) * | 2008-01-04 | 2009-07-09 | Interdigital Patent Holdings, Inc. | Radio link control reset using radio resource control signaling |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101569148A (en) * | 2007-01-10 | 2009-10-28 | Lg电子株式会社 | Method of generating data block in wireless communication system |
| CN103503509A (en) * | 2011-04-12 | 2014-01-08 | 瑞典爱立信有限公司 | A packet data unit, a user device, and a radio network controller for transmitting data from a radio network controller to the user device |
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